"I bought two of these collars for our St Bernard and Australia Shepard mix. We live on 1/2 an acre and have an invisible fence so they can see all the neighbors and their dogs plus they like to sit on the front porch and watch everyone walk by. Not to mention the doorbell issue. They would start barking and I could not get them to stop. I was worried that they would confuse the shock of the bark collar with that of the fence, but this did not happen. Even the St Bernard (who in not the brightest) understood. Now I have to say that they have been trained on the fence for 2 years and I took their fence collars off during the first week. Now they will still do one or two barks but then they stop. Which is just fine with me.
The ad said it came with short and long prongs which I need for the Aussi but it did not. I called Innotek and they are shipping them at no charge to me."